Improvement in machinery for manufacturing horseshoes



2Sheets-SheetL G. BRYDEN MACHINERY FOR MANUFACTURING HORSESHOES.

Patented Jan. 18,1876.

N-PEI'ERS, PHOTOTLITHOGRAPNER, WAgNXNGTDN, D G- 2 Sheets-Sheet 2.

G. BRYDEN. MACHINERY FOR MANUFACTURING HORSESHOES. No. 172,383.

Patented Jan.l8,1876.

Wirpesses: 19w 1/60]:

UNITED STATES GEORGE BRYDEN, OF HARTFORD, CONNECTICUT.

IMPROVEMENT lN MACHINERY FOR MANUFACTURING HORSESHOES.

Specification forming part of Letters Patent N0. 172,383, dated January18, 1876; application filed May 5,

To all whom it may concern:

Be it known that I, GEORGE BRYDEN, of Hartford, in the county ofHartford and State of Connecticut, have invented a new and usefulImprovement in the Manufacture of Horseshoes, of which the following isa specification:

The object of my invention is to produce horseshoes of hard condensedmetal, capable of sustaining more wear and possessing greater stiffnessthan the shoes in common use, which are very soft and .lack stiffness,so that they wear out fast and break and bend after being reduced inthickness by wear, and before be ing worn as thin as they might be.

In producing shoes according to my invention I first bend a short bar,enough longer than is required for the shoe, to form a shank by which tohandle it, around a former to form it in the shape of the shoe; thensubject it to the action of a drop-press in dies constructed to give therequisite shape to the upper and lower sides, also the edges, andcondense and harden the metal, and to form the creases for thenail-holes, using a preparatory set and a finishing set of dies, andsubjecting it to two operations and then finishing it in a pair oftrimming-dies, to turn off the fins at the edges produced by the shapingand condensing dies. The bending apparatus which I use consists of astationary former of the form of the inner edge of the finished shoe, abendinglever pivoted to the former at the center, a roller on the leverto force the bar against the former, and a guide and guide-roller forkeeping the bending-roller at a uniform distance from the face of theformer, which, being an irregular curve, requires the bendingroller 'tobe fixed to the lever by a movable pivot, so as to shift on it towardand from the pivot, according to the irregularities of the curve of theformer.

In the dies of the drop-presses I employ detachable curved plates orcreasers for forming the creases in the shoes, in order that I mayremove them when worn out or broken, and put in others as they wear outor become disabled, while the other portions of the dies remainserviceable, so that I save the waste of dies that would be involved ifthey were made solid with the dies.

Figure 1 is a plan view of the bending aption of Fig. 1 on the line ofparatus which I employ for bending the bar into the form of a horseshoe.Fig. 2 is a see Fig. 3 is a plan view of the first pair ofcondensing-dies, which I use for shaping, creasing, and hardening thepreviously bent blanks. Fig. 4 is a transverse section of the said diesand the blank taken on the line 3 y, Fig. 3. Fig, 5 is a transversesection of said dies and the blank, taken on the line 2 2, Fig. 3. Figs.6 and 7 are sections of the finishing-dies on lines corresponding to y yand z z of Fig. 3. Fig. 8 is a sectional elevation of the trimmingdies.Fig. 9 is a perspective view of the shoe before being subjected to theaction of the trimming-dies. Fig. 10 is a perspective view of thefinished shoe, partly in full lines and partly in dotted lines it alsoshows a section of the shoe at the toe. Fig. 11 is a plan or face viewof the upper, and Fig. 12 a similar view of the lower, trimming-die.Fig. 13 is a vertical cross-section of the two dies.

A represents a short bar, such as I take for making a shoe, partly bentagainst the former B by the bending-roller C and lever D. The former isarranged in the middle of the block E, or thereabout, the lever ispivoted at the center of the former, and the roller is pivoted to thelever in a slot, F, and extends into a guide-groove, Gr, surrounding theformer and the bed H for the bar. The outer wall of this groove is at auniform distance throughout from the face of the former, and keeps theroller the requisite distance from the former, to press the bar againstit at all points while being carried around by the lover. I is aprolongation of the bar at one end beyond the length required for theshoe, for a shank by which to handle it to shift it from one to theother of the several devices used in the process of making the shoe. Jis a pin for bolding the bar against the former at the point where theoperation begins. sent the first or preparatory set of shaping andcondensing dies, to which the blank is subjected after being bent, tocondense and harden the metal, bevel the upper and lower i sides a b atthe inner edge, bevel the under side (I at the toe, and form the creases1''. These dies are shaped to correspond with the former B, so that theblank formed on it will K and L reprez be received in them, and they areconstructed in depth so as to partially form the bevels a b d and thecreases f. These creases are formed by creasing ribs or punches g, whichI propose to construct separately from the dieblocks, and ,fit them inso that they can be removed and others substituted, as before stated. Nand O are the finishing-dies. They are similar in all respects to dies Kand L, except the beveling parts and the creases, which are adapted tocomplete the form of the shoe in these respects, which are only partlywrought to this required shape in the others.

The notches P are for the shank or handle cavity, and may be withdrawnthrough said opening. Then I trim 011' the shank by any suitable means,and thus complete the shoe. The shaping of the sides and condensing andhardening process may be effected by one set of dies, by either one ortwo operations; but it is better to use two sets, and more if preferred.

Havingthus described myinvention, I claim as new and desire to secure byLetters Patent- 1. The combination,with former-blockB, having blank-bedH and guide-groove G, of the pivoted and slotted lever D and the groovedroller 0, that changes its distance from the center of motion at thetimes and in the manner described.

2. The dies R S, constructed and applied to trim and finish the shoe,substantially in the manner specified.

GEORGE BRYDEN. Witnesses:

GEo. S. GILMAN, WILLIAM HUNTER.

